About: Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant

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About: Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Although alkoxysilanes are the most frequently used consolidants, they crack after some time. Thus, they lose the ability to consolidate the stone monuments permanently. In our previous work, it was suggested that, under laboratory conditions, alkoxysilane consolidant modified with 10 wt. % SiO2 nanoparticles of 60 - 70 nm and consolidant modified with 5 wt. % SiO2 nanoparticles of 200-300 nm cracked less than the unmodified alkoxysilane consolidant. However, the consolidants have to work equally well under non-ideal conditions of outdoor environment. To get closer to outdoor conditions, several samples of modified consolidant and samples of an unmodified control were left at various relative humidity levels at 20°C and monitored during several weeks. After this time, all consolidants were compared with each other to set the influence of different relative humidity levels on cracking. By this comparison, we can suggest under which conditions it is possible to use the modified consolidant and whether it can better preserve the stone monuments outdoors. Although alkoxysilanes are the most frequently used consolidants, they crack after some time. Thus, they lose the ability to consolidate the stone monuments permanently. In our previous work, it was suggested that, under laboratory conditions, alkoxysilane consolidant modified with 10 wt. % SiO2 nanoparticles of 60 - 70 nm and consolidant modified with 5 wt. % SiO2 nanoparticles of 200-300 nm cracked less than the unmodified alkoxysilane consolidant. However, the consolidants have to work equally well under non-ideal conditions of outdoor environment. To get closer to outdoor conditions, several samples of modified consolidant and samples of an unmodified control were left at various relative humidity levels at 20°C and monitored during several weeks. After this time, all consolidants were compared with each other to set the influence of different relative humidity levels on cracking. By this comparison, we can suggest under which conditions it is possible to use the modified consolidant and whether it can better preserve the stone monuments outdoors. (en)
Title	Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant (en)
skos:prefLabel	Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant Impact of different levels of relative humidity on cracking of modified alkoxysilane consolidant (en)
skos:notation	RIV/60461373:22310/14:43898733!RIV15-MK0-22310___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(DF11P01OVV012)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Benetková, Barbora Kotlík, Petr Slavíková, Monika Peterová, Adéla
http://linked.open.../riv/druhVysledku	O - Ostatní výsledky nezařaditelné do žádného z výše uvedených druhů výsledku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Fakulta chemické technologie
http://linked.open...dnocenehoVysledku	20592
http://linked.open...ai/riv/idVysledku	RIV/60461373:22310/14:43898733
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	nanoparticles; modification; , relative humidity; consolidant; Alkoxysilane (en)
http://linked.open.../riv/klicoveSlovo	modification nanoparticles relative humidity consolidant Alkoxysilane
http://linked.open...ontrolniKodProRIV	[D8A50B8E7563]
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	New materials and technologies for the conservation of the materials of historical monuments and the preventive care
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Kotlík, Petr Slavíková, Monika Peterová, Adéla Benetková, Barbora
http://localhost/t...ganizacniJednotka	22310

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